L1
Service
Manual
TCL
Communication Ltd.
Rev.
9015B Level 1 Service Manual
Page
1.1
12/19
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3.5.2. For standard accessories (charger, headset and USB cable)
1)
Warranty check
2)
Functional check
3)
Replacement of the defective accessory
3.5.3. Engineer functionalities
Click-through steps
Description
“Settings” -> “About tablet” -> “Status” ->
“IMEI/IMEI SV”
To check the IMEI number
Open “Calculator” application, and input “0x0-0+=”
To enter MMI (
Man
-
machine
interface)
Test mode (refer to
2.13)
open “Calculator” application, and input “1x1-1+=”
To check SW version
Long press volume up key +power key
End user format
3.5.4. Recovery mode
How to use
:
long press “Power” Key + “Volume up” key in power off mode to enter recovery mode.
When to use
: When you cannot start your handset or when there will be something wrong during
switch on or when cannot charge or cannot charge normally.
Consumer personal data format
: it will format consumer data, and the memory and settings of your
product will return as released from factory.
Click-through steps
：
1. Long press “power” key + “volume up” key to enter the Android system recovery mode.
